This is PERFECT! I found this when I was looking for a lined knapsack on Google, figuring I'd have to rig a zipper pocket on... somehow. But here you have it here for free with beautiful photos and instructions.Thank you. Thank you thank you thank you. I'm making one of these as a combo crochet project bag/game bag to take to my local game store. Yarn in the main bag, cards and dice in the pocket.